JPH0357640B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for arranging extremely small electronic components at predetermined positions on a circuit board.

[Problems to be solved by the invention] Electronic components without lead wires such as resistors, capacitors, jumpers, diodes, etc. (so-called chip-type electronic components) are mounted on a circuit board on which a circuit is printed according to a predetermined pattern. Guided and mounted. Traditionally, automated equipment for performing this task has been very complex and expensive. For this reason, it is impossible to introduce high-mix, low-volume production for financial reasons.

On the other hand, in the manual placement work of the electronic components, there is a very high risk that the electronic components will be placed incorrectly due to operator error. Therefore, before proceeding to the next process, it is necessary to check whether the arrangement of electronic components is correct.

An object of the present invention is to provide a device that can solve the above-mentioned manual problems by simple means. In other words, a specific electronic component is dropped into a recess provided in a designed position of a metal or resin mask, and then transferred to a circuit board by means such as gluing the intermediate part with adhesive. The purpose is to provide a device that can do this.

[Means for Solving the Problems] The structure of the present invention will be described with reference to the reference numerals in the drawings. The apparatus according to the present invention includes the following basic components. That is, the electronic component supply unit 2 supplies electronic components 14 from a plurality of containers 5 to the supply pipe 8, and the electronic components 14 supplied in a line from the electronic component supply unit 5 through the supply pipe 8 are fed one by one to the next. A distributing means 43 provided with a plurality of tubes 27 for guiding the electronic components 14 sent out from the supplying means to a predetermined position, and disposed below the distributing means 43, and A drawer part 44 is provided with a template 35 having a plurality of recesses 36 arranged corresponding to the arrangement of the lower end of the tube 27.

The drawer section 44 is slidably attached from directly below to in front of the distribution means 43, and the bottom plate 2 overlaps the bottom surface of the template 35.
8 is attached to the template 35 so as to be movable in all directions. Further, a meandering guide 33 is provided along the sliding direction of the drawer portion 44, and the bottom plate 28 is linked to the guide 33.

[Operation] The operation of the above device will be explained according to the flow of the electronic components 14. The electronic components 14 stored in the containers 5 are sequentially sent in a line from each container 5 to the supply pipe 8. This electronic component 14 in a row
are simultaneously sent one by one by the sending means 45. As a result, the tube 27 of the distribution means 43 has
One electronic component 14 is fed into each tube from the lower end of the tube 27 to the drawer portion 44 .

The electronic components 14 sent to the drawer section 44 are received in the recesses 36 formed in the template 35, respectively. The electronic parts 14 are now in the tube 27.
Since the objects slide down vertically, most of them are received into the recess 36 while still standing.

Subsequently, when the drawer part 44 is pulled forward from directly below the dispensing means 43, the drawer part 44 is slid linearly. At this time, the bottom plate 28 stacked below the template 35 meanderes while being guided by the meandering guide 33 provided along the sliding direction.
That is, while the drawer portion 44 is moving, the bottom plate 28 moves back and forth and left and right with respect to the template 36.
Therefore, the bottom surface of the recess 36 moves in all directions,
The electronic component 14 that fell vertically there is overturned.

In this way, the drawer part 44 is pulled out from directly below the dispensing means 43 to the front, and the drawer part 44 is opened, and a circuit board (not shown) coated with adhesive in advance is placed on the template 35 at the position where the electronic component 14 is to be mounted. Then, the electronic component 14 received in the recess 36 is transferred to the circuit board. As a result, the electronic component 14 is mounted at a predetermined position on the circuit board.

The electronic components 14 can be transferred from the drawer portion 44 to the circuit board by, in addition to the above-mentioned stacking, it is also possible to use a method of vacuum suction and transfer. In the former case, the arrangement of the recesses 36 is as follows:
The arrangement is reversed with respect to the position where electronic components are mounted on the circuit board, and in the latter case, the arrangement of the recess 36 is
The arrangement is the same as that of electronic components on a circuit board.

[Example] Next, an example of the present invention will be described with reference to the drawings.

As already stated, the apparatus according to the present invention includes an electronic component supply section 2 that supplies electronic components 14 from a plurality of containers 5 to a supply pipe 8, and a single electronic component supply section 2 that supplies electronic components 14 from the electronic component supply section 2 through the supply pipe 8. sending means 45 for sending one by one to the next distributing means 43;
A drawer section 44 is provided with a recess 36 for receiving the electronic component 14 at a predetermined position for placing the electronic component, and a distributing means 43 is provided with a plurality of tubes 27 connecting the delivery means 45 and the recess 36.

As shown in FIGS. 1 and 2, the basic component of the electronic component supply section 2 consists of one panel 3. A circular hole 4 is formed in this panel 3, into which the outlet 7 side of a container 5 in which electronic components 14 are roughly housed is fitted.

The container 5 has a cylindrical shape, and its bottom 6 has a hopper-like taper that gradually becomes lower from the periphery toward the central outlet 7. A supply pipe 8 is inserted into the discharge port 7 from below.

As shown in FIG. 3, an inclined through hole 9 is formed in the side wall of the bottom 6 of the container 5, and a stopper 10 is inserted into the side wall of the bottom 6 of the container 5.
is stored and a supply pipe 8, which will be described later, is not inserted into the outlet 7, it is pushed out to the outlet 7 by gravity or the spring 11, and closes the outlet 7. This stopper 10 automatically retreats when the supply pipe 8 is inserted into the discharge port 7. This mechanism is convenient when replacing the entire container 5 without replacing the contents of the container 5.

The panel 3 holding the container 5 is held between the pillars 12 on both sides, and is moved up and down by an eccentric mechanism 13 as shown in FIG. 4, or by some other mechanism.
Due to this vertical movement, the electronic component 14 is delivered from the container 5 to the supply pipe 8. The panel 3 is attached to the support column 12 via a special bearing 15 in order to reduce vertical movement friction.

A plate 16 holding the supply pipe 8 is attached to the pillars 12 on both sides. The inner diameter of the supply pipe 8 is slightly larger than the diameter of the electronic component 14, and the tip 17 thereof is obliquely tapered like the mouthpiece of a flute. A thin window is provided at the lower end of the supply pipe 8 to confirm the existence of the electronic component 14, and a thin window is provided at the lower end of the supply pipe 8 to confirm the existence of the electronic component 14.
A small blade is inserted to stop the flow of electronic components 14 into 9.

Below the panel 16 holding the supply pipe 8 there is a loading plate 19, which transports the electronic components 14 from the hopper-like container 5 to the next distribution station.
This is for mounting on a wiring board. This panel 16 is provided with a through hole 20 having the same height as the electronic component 14 to be mounted and a diameter slightly larger than the electronic component 14. The arrangement of this through hole 20 corresponds exactly to the outlet of the supply pipe 8 fixed to the panel 16.

In the initial position where the loading plate 19 introduces the electronic component 14, the through hole 20 is arranged in the supply pipe 8.
corresponds exactly to the position of Here, one electronic component 14 is dropped into each through hole 20. This loading plate 19 is configured such that the through holes 20 are connected to the through holes 24 of the distribution plate 23 by electromagnetic force or similar means.
will be moved to the location that matches. Here, the electronic component 14 is sent to the next distribution section 43 (on the pedestal 22 side). Then, after a predetermined period of time has elapsed, the loading plate 19 automatically returns to the original position for receiving the electronic component 14, and this operation is repeated thereafter. A large number of electronic components 14 are mounted on the same wiring board by repeating the above operation several times while leaving the drawer section 44 (described later) in the same state directly below the distribution means 43 without drawing it out. It is also possible to do so.

On the loading plate 19, there are two plates 2.
A pedestal 22 of a distribution section 43 with 3 and 25 is arranged. The upper plate 23 forming the upper surface of the pedestal 22 has through holes 24 arranged in the same manner as the through holes 20 of the loading plate 19. A lower plate 25 forming the bottom surface of the pedestal 22 has through holes 26 arranged according to the arrangement of the electronic components 14 on the wiring board. And these two plates 23,
25 are connected via a tube 27 for guiding the electronic component 14 to a predetermined hole 39. This tube 27 is made of a special synthetic resin that has flexibility and antistatic properties in order to improve the slipperiness of the electronic components 14 therein, and its inner shape is square, and the distance between the opposing surfaces is It is slightly wider than the diameter of part 14.

Below the plate 25 on the bottom side, there is a drawer part 44 (see FIGS. 5 and 6) for placing the electronic component 14 on the template 35. Its basic component consists of a floating plate 28 with a rough upper surface.
It moves freely within frame 29.

Both side portions of the frame 29 of the drawer portion 44 are slidably attached to groove members 42, 42 provided on both sides of the drawer portion 44. These groove members 42, 42 are linear, so that the operator can
When you pull 4, it only moves in a straight line.
The free movement of the floating plate 28 is achieved by a spring 3 inserted between the side of the floating plate 28 and the inside of the frame 29.
It is tempered by 0.

Two pins 32 are provided on the bottom surface of the floating plate 28 along the Y-axis direction (vertical direction in FIG. (see figure). The linear movement of the drawer 44 when the handle 34 of the drawer 44 is pulled is combined with the sinusoidal movement of the floating plate 28 and transmitted to the floating plate 28 as a rotational motion. As a result, no matter which direction the concave portion 36 of the template 35 is located, the electronic component 14 that has fallen into the concave portion 36 is laid down horizontally.

A template 35 having a predetermined recess 36 is placed on the floating plate 28. This template 35 is formed to be slightly smaller than the diameter of the electronic component 14 so that the electronic component 14 placed horizontally thereon can be adhered thereto with an adhesive. The recess 36 is
As long as the accuracy of the circuit formed on the wiring board allows,
It has a rectangular shape slightly larger than the electronic component 14 so that the electronic component 14 can be held with some margin.

A cap 37 that covers this template 35
(see FIG. 7) has a handle 38 and a through hole 39 of appropriate thickness (see FIG. 8). This through hole 39 allows the electronic component 14 to pass through the recess 36 below.
to help it slide easily into the recess 36.
It has a convenient shape to prevent the electronic component 14 inserted therein from shifting due to various movements of the drawer part 44.

The template 35 and the drawer part 44
It has a cap 37 and positioning pins 40 for accurately positioning a wiring board (not shown). Note that the wiring board is pressed onto the electronic component 14 placed in the recess 36 of the template 35.The overall process using this device will be explained as follows.

First, the electronic component 14 is supplied from the hopper 2. The electronic components 14 are arranged in a row overlapping each other in the supply pipe 8, but at the same time they are released by the loading plate 19 and the plate 2 of the distribution section 43
One electronic component is fed into one tube 27 on the third side. From here it passes through the tube 27 and enters the cap 37 of the drawer 44, and the template 36
fall into. There, the electronic component 14 falls in an upright position. Thereafter, when the operator pulls the drawer 44 toward the user, the bottom plate 28 reciprocates, and the electronic component 14 that has fallen into the recess 36 is forced horizontally. The bottom plate 28 forms the bottom surface of the recess 36, but is separate from the template 36 and can be removed from the bottom thereof. Since the bottom plate 28 reciprocates in any direction through 360 degrees, the electronic component 14 falls in a direction where there is no barrier around it, and falls precisely into the recess 36.

The configuration of the device described above is an example of the simplest form, and the present invention is not limited to what is shown in the drawings. That is, various modifications, changes, substitutions, additions, etc. can be adopted as the constituent elements of the device according to the present invention, as long as they do not depart from the basic idea and scope of the present invention as defined in the claims section. This should be understood.

[Effects of the Invention] As is clear from the above description, the apparatus of the present invention is simple and can be used with a small investment, and therefore can be used even in high-mix, low-volume production.

In addition, the electronic component 14 can be reliably received in the recess 36 of the drawer 43 by a simple operation by the operator, and an accurate electronic component placement process can be carried out. Therefore, inspection before proceeding to the subsequent process becomes unnecessary, and in this respect, a large labor-saving effect can be obtained.

[Brief explanation of drawings]

All drawings show embodiments of this invention.
Figure 1 is a conceptual diagram of the entire work station, Figure 2 is a plan view of a plate that holds a hopper-shaped container loaded with bulk electronic components, and Figure 3 is a plan view of a hopper-shaped container equipped with a means to prevent electronic components from escaping. FIG. 4 is a partially longitudinal side view showing an eccentric shaft mechanism for vertically moving the plate holding the container; FIG. 5 is a longitudinal front view of the drawer;
Figure 6 is a partially cutaway plan view of the drawer, Figure 7 is a partially cutaway plan view of the drawer.
The figure is a plan view showing the top surface of the drawer, and FIG. 8 is a vertical sectional side view of the main part showing the special shape of the recess of the drawer.
FIG. 9 is a plan view showing the groove guide means for driving the drawer and its bottom plate. 2... Electronic component supply unit, 5... Container, 8... Supply pipe, 14... Electronic component, 27... Tube, 33... Guide, 35... Template, 3
6... Recessed portion, 43... Distribution means, 45... Delivery means, 44... Drawer part.

Claims (1)

[Claims] 1. In an apparatus for arranging electronic components at predetermined positions to be mounted on a circuit board, an electronic component supply section 2 supplies electronic components 14 from a plurality of containers 5 to a supply pipe 8, and the electronic component supply section 2 passes through the supply pipe 8. Electronic components 14 supplied in a row from 2
Sending means 4 for sending the following one by one to the next distributing means 43
5. A distribution means 43 having a plurality of tubes 27 for guiding the parts 14 sent out from the supply means to a predetermined position, and disposed below the distribution means 43 and corresponding to the arrangement of the lower ends of the tubes 27. A template 35 having a plurality of recesses 36 arranged in
The drawer part 44 is attached so as to be slidable from just below the distribution means 43 to the front thereof, and the bottom plate 28 stacked on the bottom surface of the template 35 can be freely moved in all directions with respect to the template. An automatic placement device for electronic components, characterized in that a meandering guide 33 is provided along the sliding direction of the drawer section 44 when mounted, and the bottom plate 28 is linked to the guide 33.